Yes, this mothereboard can actually supports up to 4GIG of RAM , so probably the problem lies on the RAM that you have, If you're using 2 or more piece or ram to this motherboard make sure they are the same brand because sometimes you will have problem like this if the memory are not the same brand...this is the link for the complete specs of the motherboard http://www.dealtime.com/xPF-Gigabyte-Gigabyte-GA-945P-S3-945-Core-2-Extreme-Core-2-Duo-1066FSB-LGA775-DDR2-ATX-Motherboard-w-Audio-Gigab
Answers & Comments
Yes, this mothereboard can actually supports up to 4GIG of RAM , so probably the problem lies on the RAM that you have, If you're using 2 or more piece or ram to this motherboard make sure they are the same brand because sometimes you will have problem like this if the memory are not the same brand...this is the link for the complete specs of the motherboard http://www.dealtime.com/xPF-Gigabyte-Gigabyte-GA-945P-S3-945-Core-2-Extreme-Core-2-Duo-1066FSB-LGA775-DDR2-ATX-Motherboard-w-Audio-Gigab
Hope that helps..........